Attachment for die-stocks.



mgmw 8 J. M. MONIE.

ATTACHMENT FOR DIE STOCKS.

rum-non FILED no. 24, mo.

992,973. Patented May 23, 1911.

. I Abtest inventor: wi'-dMMonia UNITED STATES PATENT OFFICE.

JOHN M. MONIE, OF BONNIE TERRE, MISSOURI.

ATTACHMENT FOR DIE-STOCKS.

invention being to provide means other than the ordinary die stockhandles by which die stocks may be rotated in screw thread cuttingoperations under conditions that will not permit of the use of theordinary die stock handles.

In many instances where screw threads are to be cut on objects such aspipes, there is insuflicient space to permit of the ordinary die stockhandles turning in a circular path for the operation of the die stock,and this is particularly true in cutting screw threads on pipes that arepresent in ditches or trenches in view of the fact that the walls orbottoms of the ditches or trenches prevent the proper movement of thedie stock handles. By my improvement, I am enabled to dispense with theordinary handles and substitute means applied directly to the die 1stock frame by which said frame may be operated so that the space inwhich the die stock turns does not need to be any greater than one whichwill permit the turning of the frame only. I

I Figure I is a perspective view of a die stock frame, and my attachmentapplied thereto, the ordinary removable handles being shown in dottedlines. Fig. II is a view of a fragment of my attachment.

In the accompanying drawings :A designates a die stock frame having sidewings or fins B. No invention is herein claimed for said frame, which isillustrated only for the purpose of showing my attachment appliedthereto. The die stock frame is preferably so made as to permit of theapplication to it of the usual handle rods C, seen in dotted lines Fig.I, and which are dis pensed with when my attachment is made use of.

Specification of Letters Patent.

Application filed December 24, 1910.

Patented May 23, 1911.

Serial No. 599,086.

My attachment comprises a yoke 1 that is in general contour of U-shape,and has an outwardly projecting central part which is arched or raisedso as to provide die clearance between it and the die stock and two armsthat are adapted to straddle the die stock and the die stock frame A.The arms of this yoke terminate in hooks 2 which engage the side wingsor fins and within which are socket seats 3 which receive the side wingsor fins. The yoke is applied to the die stock by slipping the hooks ofits arms onto the side wings or fins of the die stock frame until theyare brought to substantially the longitudinal center of said frame, andsuch application is facilitated by reason of the fact that the width ofthe frame is narrowed from its longitudinal center to its ends. Thesocket seats 3 in the hooks of the yoke arms are of such contour as tofit snugly to the wings or fins of the die stock frame and,therefore,the yoke arms are connected to the die stock frame in a substantialmanner by the simple act of slipping the attachment onto said frame.

To provide for the positive retention of the attachment upon the diestock frame, I mount in the arms of the yoke binding or clamping screws4 that are adapted to impinge against the die stock frame after passingthrough said arms, and effect a clamping action upon the wings or finsof the die stock frame located in the socket seats 3 over the inturnedends of the hooks 2.

The yoke 1 is provided with a wrench head 5 to which a monkey wrench,any other type of wrench, or any other suitable implement may beapplied, for the purpose of turning the attachment and operating the diestock frame with the same efficiency as it would be operated by the useof the usual handle rods, and with the requirement of but a limitedspace in which the wrench is manipulated, for the operation of the diestock.

The attachment herein described is extremely simple in nature andinexpensive in cost, and is also durable and unlikely to become impairedin use. It may be instantly detached from the die stock frame when theuser of such frame desires to employ with it the ordinary handle rodsunder conditions where there is sufiicient surrounding space to receivethe side Wings of and to engage beneath the die stock frame.

JNO. M. MONIE.

In the presence of C. F. DINWIDDIE, J. J. BOWMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

